Speier Racing Heads offers the absolute purest springs available in the market today! From chrome silicone, H-11 and the newest high tensile strength (HTS) chrome silicone. PAC, Manley, K-Motion, and our SRH approved springs are available. This is just the most popular spring options, full lines available. Call for price.
Titanium Retainers
Manley Titanium Retainers $210 (17-20g)
Manley Titanium LW Ti17 Retainers $305 (14-17g)
Manley LW H-13 Tool Steel $170 (21-23g)
PAC400 Series Titanium Retainers $215
PAC500 Series Titanium Retainers $345 (15-18g)
KMotion Titanium Retainers $240 (19g)
SRH150 Titanium Retainer $145 (20g)
SRH250 USA Titanium Retainers $205 (18g)
SRH140 Titanium Retainer $135 (17g)
Titanium Retainers
Manley Titanium Retainers $210 (17-20g)
Manley Titanium LW Ti17 Retainers $305 (14-17g)
Manley LW H-13 Tool Steel $170 (21-23g)
PAC400 Series Titanium Retainers $215
PAC500 Series Titanium Retainers $345 (15-18g)
KMotion Titanium Retainers $240 (19g)
SRH150 Titanium Retainer $145 (20g)
SRH250 USA Titanium Retainers $205 (18g)
SRH140 Titanium Retainer $135 (17g)
Lifts based off .050-.060 bind clearance. We recommend using lash as a "cushion."
1.500 Spring Diameter
PAC-1355 (NANO-420@2.175/1.200@1.175/1.130CB)1.000 LIFT/144g $650
PAC-1356 (NANO-300@2.100/1000@1.200/1.130CB).900 LIFT/144g $545
Manley-221455 (HTS-450@2.175/1247@1.175/1.130CB)1.000 LIFT/143g $660
Manley-221456 (HTS-330@2.100/1050@1.200/1.130CB).900 LIFT/139g $565
Manley-221420 (HTS-275@2.050/940@1.200/1.130CB).850 LIFT/136g $525
KMotion-K1900 (M500-440@2.200/1183@1.250/1.130CB)1.000 LIFT $365
KMotion-K975H* (M500-310@2.100/1012@1.200/1.130CB).900 LIFT/141g $355
KMotion-K975* (M500-280@2.050/950@1.200/1.130CB).850 LIFT/138g $345
KMotion-K800* (Silicone-170@1.850/460@1.200/1.055CB).700LIFT/109g $125
1.550-1.580 Spring Diameter
PAC-1225* (PAC-285@2.000/795@1.200/1.120CB).800 LIFT/152g $305
PAC-1325* (NANO-285@2.000/795@1.200/1.120CB).800 LIFT/152g $475
KMotion-K1150* (Silicon-250@2.000/630@1.250/1.140CB).800 LIFT/153g $185
KMotion-K1650* (Silicon-260@2.000/750@1.250/1.140CB).800 LIFT/154g $225
KMotion-K950* (HTS-280@2.000/785@1.250/1.140CB).800 LIFT/157g $275
SRH385C* (Cyloy-240@1.950/600@1.250/1.180CB).740 LIFT/157g $225
SRH425 (Silicon-140@1.900/380@1.200/1.150CB).660 LIFT $90
1.500 Spring Diameter
PAC-1355 (NANO-420@2.175/1.200@1.175/1.130CB)1.000 LIFT/144g $650
PAC-1356 (NANO-300@2.100/1000@1.200/1.130CB).900 LIFT/144g $545
Manley-221455 (HTS-450@2.175/1247@1.175/1.130CB)1.000 LIFT/143g $660
Manley-221456 (HTS-330@2.100/1050@1.200/1.130CB).900 LIFT/139g $565
Manley-221420 (HTS-275@2.050/940@1.200/1.130CB).850 LIFT/136g $525
KMotion-K1900 (M500-440@2.200/1183@1.250/1.130CB)1.000 LIFT $365
KMotion-K975H* (M500-310@2.100/1012@1.200/1.130CB).900 LIFT/141g $355
KMotion-K975* (M500-280@2.050/950@1.200/1.130CB).850 LIFT/138g $345
KMotion-K800* (Silicone-170@1.850/460@1.200/1.055CB).700LIFT/109g $125
- KMotion-7340, Manley 23676-16, Manley Ti17 23679-16, PAC R509-16 Retainers
1.550-1.580 Spring Diameter
PAC-1225* (PAC-285@2.000/795@1.200/1.120CB).800 LIFT/152g $305
PAC-1325* (NANO-285@2.000/795@1.200/1.120CB).800 LIFT/152g $475
- PAC R405-16, PAC R505-16 Retainers
- Manley 23643-16
KMotion-K1150* (Silicon-250@2.000/630@1.250/1.140CB).800 LIFT/153g $185
KMotion-K1650* (Silicon-260@2.000/750@1.250/1.140CB).800 LIFT/154g $225
KMotion-K950* (HTS-280@2.000/785@1.250/1.140CB).800 LIFT/157g $275
SRH385C* (Cyloy-240@1.950/600@1.250/1.180CB).740 LIFT/157g $225
- KMotion-7320, SRH150, SRH250, Manley 23660-16 Retainers
SRH425 (Silicon-140@1.900/380@1.200/1.150CB).660 LIFT $90
- SRH140 Retainers
1.625-1.650 Spring Diameter
PAC-1224* (PAC-295@2.000/795@1.250/1.080CB).860 LIFT/152g $275
Manley-221424P (HTSilicon-250@2.000/800@1.150/1.070CB).880 LIFT/149g $505
Manley-221425 (HTSilicon-280@2.100/794@1.250/1.150CB).900 LIFT/160g $285
Manley-221425P (HTSilicon-280@2.100/794@1.250/1.150CB).900 LIFT/160g $525
PAC-1249 (PAC-375@2.200/1065@1.200/1.130CB)1.000 LIFT $390
KMotion-K1500 (H11-265@2.000/950@1.200/1.090CB).850 LIFT $365
KMotion-K1700 (H11-360@2.000/880@1.250/1.150CB).850 LIFT $385
1.677-1.725 Spring Diameter
Manley-221448 (HTSilicon-350@2.100/1010@1.200/1.142CB).900 LIFT/196g $485
Manley-221448P (HTSilicon-350@2.100/1010@1.200/1.142CB).900 LIFT/196g $685
LS Drop In Kits (springs, retainers, locks, seals)
PAC-KS023 (1.290OD/145@1.800/385@1.125/.700 lift), steel retainers $455
KMotion-K775S (1.300OD/155@1.780/400@1.130/.680 lift), steel retainers $285
KMotion-K775T (1.300OD/155@1.780/400@1.130/.680 lift), titanium retainers $425
SRH483 (1.26OD/150@1.800/425@1.200/.660 lift), titanium retainers $375
PAC-1224* (PAC-295@2.000/795@1.250/1.080CB).860 LIFT/152g $275
- PAC R404-16, PAC R504-16, Manley 23648-16 Retainers
- KMotion-7330, Manley 23655-16 Retainers
Manley-221424P (HTSilicon-250@2.000/800@1.150/1.070CB).880 LIFT/149g $505
Manley-221425 (HTSilicon-280@2.100/794@1.250/1.150CB).900 LIFT/160g $285
Manley-221425P (HTSilicon-280@2.100/794@1.250/1.150CB).900 LIFT/160g $525
- Manley 23640-16 Retainers
PAC-1249 (PAC-375@2.200/1065@1.200/1.130CB)1.000 LIFT $390
KMotion-K1500 (H11-265@2.000/950@1.200/1.090CB).850 LIFT $365
KMotion-K1700 (H11-360@2.000/880@1.250/1.150CB).850 LIFT $385
- KMotion-7380, Manley 23662-16 Retainers
- Manley 23655-16 Retainers
1.677-1.725 Spring Diameter
Manley-221448 (HTSilicon-350@2.100/1010@1.200/1.142CB).900 LIFT/196g $485
Manley-221448P (HTSilicon-350@2.100/1010@1.200/1.142CB).900 LIFT/196g $685
- Manley 23640-16 Retainers
- KMotion-7390 Retainers
LS Drop In Kits (springs, retainers, locks, seals)
PAC-KS023 (1.290OD/145@1.800/385@1.125/.700 lift), steel retainers $455
KMotion-K775S (1.300OD/155@1.780/400@1.130/.680 lift), steel retainers $285
KMotion-K775T (1.300OD/155@1.780/400@1.130/.680 lift), titanium retainers $425
SRH483 (1.26OD/150@1.800/425@1.200/.660 lift), titanium retainers $375
* = Measured with Retainer on Digital Buxton
C = Cyloy Extreme Chrome-Silicone
RATE= Seat Pressure - Open Pressure divided by Open Lift
C = Cyloy Extreme Chrome-Silicone
RATE= Seat Pressure - Open Pressure divided by Open Lift
| 211856-k-motion-brochure.pdf |
| manley_valve_springs.pdf |
| pac_valve_springs.pdf |
| exacta-dd-diptico-1.pdf |